NPPES file of Aug 9, 2026

Sophia Maria Mastakas, LCSW

Clinical Social Worker · Alexandria, VA

Sophia Maria Mastakas, LCSW is a clinical social worker with a practice address in Alexandria, Virginia, and NPI 1386511764, issued on Oct 21, 2025. Check the license (Virginia 0904019304, as entered in NPPES) with the Virginia board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386511764
Name
Sophia Maria Mastakas
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
0904019304 VA
Self-reported in NPPES; status is on the state search
Practice location
6901 S Van Dorn St, Alexandria, VA 22315
Phone
(703) 313-6300
Enumerated
Oct 21, 2025
Record last updated
Oct 24, 2025
Medicare enrollment
Enrolled (PECOS I20251107003354); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical social worker records → All 8,027 in Virginia → Look up another NPI →

Also registered at 6901 S Van Dorn St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Tiffany Barnhard, LCSWClinical Social Worker1922407469
  2. Justin BeverageClinical Social Worker1497505358
  3. Jason Borges, LCSWClinical Social Worker1386131191
  4. Jae Kim, LPCProfessional Counselor1265155188
  5. Anne Kolbe, RNRegistered Nurse1639334725
  6. Stacy Liebovitz, LPCProfessional Counselor1235672445

Verify Sophia Maria Mastakas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Virginia board licenses this profession
    Search for license 0904019304    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Virginia license search

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Sophia Maria Mastakas among 8,027 clinical social worker records in Virginia

Sophia Maria Mastakas, LCSW is one of 8,027 clinical social worker records with a practice address in Virginia. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 89% of them.

  • NPI issued2025 · 89% of these records are older, 4% newer
  • In a Medicare fileNo · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 22% of these records are
  • Graduated2022 · median 2010 among the 1,765 with a school on file
  • Record last updated2025 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

455 clinical social worker records list a practice address in Alexandria

They are 455 of the 5,424 NPPES records with a practice address in Alexandria, and 8,027 clinical social worker records in Virginia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 8,027 in Virginia → Every provider in Alexandria → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Marisa Allnut, L.C.S.WAlexandria, VA 223151174027916
  2. Tiffany Barnhard, LCSWAlexandria, VA 223151922407469
  3. Justin BeverageAlexandria, VA 223151497505358
  4. Jason Borges, LCSWAlexandria, VA 223151386131191
  5. Alicia Broadus-Duckworth, LCSWAlexandria, VA 223151558971549
  6. Sandra Carr-CarringtonAlexandria, VA 223151275123838
  7. Debra Earp, LCSWAlexandria, VA 223151215509641
  8. Angela Grillo, LCSW-RAlexandria, VA 223151932320868

Common questions

What is Sophia Maria Mastakas, LCSW's NPI number?

Sophia Maria Mastakas, LCSW's National Provider Identifier (NPI) is 1386511764, issued on Oct 21, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Sophia Maria Mastakas, LCSW located?

The NPPES record lists a practice address at 6901 S Van Dorn St, Alexandria, VA, 22315. Phone: (703) 313-6300. Providers update this record themselves, so call before visiting.

How can I verify Sophia Maria Mastakas, LCSW's license?

NPPES lists Virginia license number 0904019304, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.